$NetBSD$

Add MirBSD.

--- configure.orig	Tue Dec 29 13:34:27 2009
+++ configure
@@ -2192,6 +2192,7 @@ sparc-linux*)	opt_bash_malloc=no ;;	# sp
 #*-freebsd*-gnu)	opt_bash_malloc=no ;;	# there's some undetermined problem here
 #*-freebsd*)	opt_bash_malloc=no ;;	# they claim it's better; I disagree
 *-openbsd*)	opt_bash_malloc=no ;;	# they claim it needs eight-bit alignment
+*-mirbsd*)	opt_bash_malloc=no ;;	# they claim it needs eight-bit alignment
 *-aix*)		opt_bash_malloc=no ;;	# AIX machines
 *-nextstep*)	opt_bash_malloc=no ;;	# NeXT machines running NeXTstep
 *-macos*)	opt_bash_malloc=no ;;	# Apple MacOS X
